The problem with standards are that there are too many standards. When RFC-2616 – defining HTTP/1.1 – was updated, the IETF spread the details across six RFCs: RFC-7230 to RFC-7235. Most of the changes appear to be server side, but in some areas, particularly around header formatting, the rules are getting tighter.
I was lucky to have a hackathon day at the DC-Baltimore Perl Workshop, so I implemented some of the stricter rules as well as fixing a number of other bugs (and even adding a few features!) See the HTTP::Tiny Changes file for details.
I still need to review more of the RFCs to see if there are other changes that impact HTTP::Tiny.
Meanwhile, HTTP-Tiny-0.057-TRIAL.tar.gz is on CPAN. Please, please, please install it and use it in your day-to-day work to see if there are any problems.
Here is how you can install it with cpanm or cpan:
$ cpanm --dev HTTP::Tiny $ cpan DAGOLDEN/HTTP-Tiny-0.057-TRIAL.tar.gz
If you find any problems, please open a ticket on the HTTP::Tiny Github issue tracker.